JP2005210934A - Applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an applicator which can prevent the accumulation of granules on the inner circumferential side of a conveyer belt for conveying the granules and from which the conveyer belt can easily be attached or detached. <P>SOLUTION: In this applicator 1, projections 11b are projected along both the edges of the inner circumferential side of the conveyer belt 11 in a state capable of being engaged with the end face 9a of an upstream side roller 9 and the end face 10a of a downstream side roller 10. Therefore, during the driving of the conveyer belt 11, the projections 11b of the conveyer belt 11 are engaged with the end face 9a of the upstream side roller 9 and the end face 10a of the downstream side roller 10 to prevent the slippage of the conveyer belt 11 in a direction approximately vertical to the conveying direction of the conveyer belt 11. Thereby, conventional grooves disposed in the upstream side roller 9, the downstream side roller 10 and a belt-receiving plate 13 to prevent the slippage of the conveyer belt 11 are not necessary, and the accumulation of granules in the grooves can be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a spreader that spreads particles such as sand and fertilizer, in particular, it is possible to suppress the accumulation of particles on the inner peripheral side of a conveyor belt that conveys the particles provided in the spreader, Further, the present invention relates to a spreader in which a conveyor belt can be easily attached and detached.

  In general, in golf courses and the like, particles such as sand and fertilizer are sprayed between turf eyes to grow grass. For this operation, a spreader that spreads particles such as sand and fertilizer contained in the hopper while running on a carriage is used.

  It is desirable that sand, fertilizer, etc. are evenly spread evenly. Therefore, as a spreader that spreads particles while traveling on a carriage, a conveyor belt is provided near the lower outlet of the hopper, and the particles supplied from the hopper are conveyed by the conveyor belt, and downstream of the conveyor belt in the conveying direction. What is comprised so that the brush provided in can be rotated and a granule may be spread | dispersed is known.

  FIG. 7 shows, in a conventional spreader, a conveyor belt 111 provided at the lower portion of the hopper by a two-dot chain line, and the conveyor surface 111a of the conveyor belt 111 is arranged on the back side (conveyor belt) on the inner peripheral side of the conveyor belt 111. 11 is a diagram showing a belt receiving plate 113 supported from the inner peripheral side of 111) and an upstream roller 109 and a downstream roller 110 provided in parallel with the belt receiving plate 113 by solid lines. FIG. 8 is a cross-sectional view of the conveyor belt 111 taken along the line VIII-VIII in FIG. 7, and the conveyor belt 111 is indicated by a solid line.

  As shown in FIG. 7, the upstream roller 109, the downstream roller 110, and the belt receiving plate 113 provided in the conventional spreader have two grooves 209, 210, and 213 parallel to the conveying direction of the conveyor belt 111. Each was provided. As shown in FIG. 8, the inner surface of the conveyor belt 111 is provided with ridges 211 that fit into the grooves 209, 210, and 213 over the entire circumference. By causing the conveyor belt 111 to travel while being fitted in the rollers 109, 110 and the grooves 209, 210, 213 of the belt receiving plate 113, the conveyor belt 111 is in a direction substantially perpendicular to the conveying direction (the axial centers of the rollers 109, 110). Direction) was suppressed.

  Further, when particles such as sand accumulate on the inside of the conveyor belt 111, a larger force is required to drive the conveyor belt 111, and a load is applied to the drive source, which causes a problem such as failure.

  Therefore, as shown in FIG. 8, the belt receiving plate 113 supports the conveying surface 111 a of the conveyor belt 111 from the back surface side (inner peripheral side of the conveyor belt 111) on its upper surface, The scraper 114 is provided from the lower surface to a height at which it comes into contact with the inner peripheral surface of the return side surface 111 b of the conveyor belt 111.

  As shown in FIG. 7, the scraper 114 is provided obliquely from the central part on the downstream side (brush side) in the transport direction of the conveyor belt 111 toward both edges on the upstream side.

Accordingly, the particles that have entered the inner peripheral surface of the conveyor belt 111 are both scraped by the scraper 114 while the inner peripheral surface of the return surface 111b is sent from the downstream roller 110 to the upstream roller 109. Collected at the edge and discharged from the inner circumferential surface of the conveyor belt 111.
JP-A-10-56840

  However, the particles that have entered the inner peripheral surface of the conveyor belt 111 are particularly likely to accumulate in the grooves 209, 210, and 213 provided in the rollers 109 and 110 and the belt receiving plate 113. The particles accumulated in the belt are pressed by the protrusions 211 of the conveyor belt 111 and hardened.

  Further, since particles further accumulate on the particles hardened in the grooves 209, 210, and 213, a part of the conveyor belt 111 is raised, and irregularities are formed on the conveying surface 111a to convey the particles uniformly. Or the tension of the conveyor belt 111 is biased and the conveyor belt 111 is worn unevenly.

  Therefore, it is necessary to remove the particles in the grooves 209, 210, and 213. However, since the particles are hardened, it is not easy to remove the particles in the grooves 209, 210, and 213. there were.

  Further, as shown in FIG. 8, on the lower surface side of the belt receiving plate 113, in order to gather the particles on the inner peripheral surface of the conveyor belt 111 to both edge portions, A scraper 114 is projected to a height that contacts the peripheral surface.

  However, on the inner peripheral surface of the conveyor belt 111, two ridges 211 corresponding to the rollers 109, 110 and the grooves 209, 210, 213 of the belt receiving plate 113 are continuously provided in parallel to the conveying direction. Therefore, the scraper 114 cannot be provided continuously. Further, if it is attempted to provide the scraper 114 while avoiding the portion where the protrusion 211 is formed, the number of members is increased and the cost is increased.

  Therefore, as shown in FIG. 7, conventionally, the scraper 114 is not provided on the center side of the protrusion 211 formed on the inner peripheral surface of the conveyor belt 111, and the granular material is provided in the portion where the scraper 114 is not provided. There was also a problem that it was easy to deposit.

  Further, since the conveyor belt 111 is a consumable item, it needs to be replaced periodically. Conventionally, when the conveyor belt 111 is removed from the carriage, the rollers 109 and 110 and the belt receiving plate 113 are pulled out of the conveyor belt 111 so that only the conveyor belt 111 is present, and the conveyor belt 111 is taken out from the upper side of the carriage.

  However, a chain that transmits the rotation of the electric motor or the hydraulic motor, a gear that decelerates the rotation transmitted through the chain, and the like are attached to the tip of the shaft of the roller 110 located on the downstream side in the transport direction. Therefore, in order to remove the rollers 109 and 110 from the carriage for exchanging the conveyor belt 111, the gears and chains attached to the rollers and the cover provided for protecting the chains must be removed. There is a problem that it takes time to replace the conveyor belt 111. In addition, since grease is applied to the gear, there is a problem that sand or the like easily adheres to the gear and wears quickly, and a worker's hand and other members are easily contaminated during maintenance. .

  In addition, a pair of holes for receiving the shaft tip portions of the upstream roller 109 and the downstream roller 110 are provided in the plate-like members on both side surfaces of the carriage, and the shaft tip portions of the upstream roller 109 and the downstream roller 110 are formed by the holes. Thus, the work at the time of assembling the conveyor belt 111 is facilitated.

  However, when such plate-like members are provided on both side surfaces of the carriage, the plate-like members need to be removed when the conveyor belt 111 is attached or detached. In a state where the plate-like member is removed, there is no one that supports each of the rollers 109 and 110. Therefore, an operation of removing this plate-like member has to be performed while the operator supports each of the rollers 109 and 110. Therefore, there is also a problem that the conveyor belt 111 cannot be easily attached and detached.

  The present invention has been made to solve the above-described problems, and can suppress the accumulation of particles on the inner peripheral side of the conveyor belt that conveys the particles, and the conveyor belt can be attached and detached. The purpose is to provide an easy spreader.

  In order to achieve this object, a spreader according to claim 1 includes a dolly that can travel, a hopper that is provided on the dolly and accommodates particles, a lower outlet that is provided below the hopper, and a lower part thereof. An annular conveyor belt that conveys the granules supplied from the hopper through the outlet, and an axis that supports the upstream end in the conveying direction of the conveyor belt on the inner peripheral side of the conveyor belt. An upstream roller, a downstream roller that is rotatable about an axis that supports a downstream end in the conveying direction of the conveyor belt on the inner peripheral side of the conveyor belt, and a downstream roller in the conveying direction of the conveyor belt And a brush for dispersing particles conveyed by the conveyor belt by rotating around an axis thereof, wherein the conveyor belt With La of the end face and the inner peripheral surface edge projection which projects along the lockable its conveyor belt to the end surface of the downstream roller.

  According to the spreader according to claim 1, the granules supplied from the hopper on the carriage through the lower outlet are supplied to the conveyor belt through the lower outlet, and are conveyed by the conveyor belt, It is spread by a brush provided downstream in the conveying direction of the conveyor belt. In addition, the conveyor belt is locked to the end surface of the upstream roller and the end surface of the downstream roller by the protrusions protruding along the edge of the inner peripheral surface of the conveyor belt, and the conveyor belt is connected to the conveyor belt. The shift in the direction substantially perpendicular to the transport direction is suppressed.

  The spreader according to claim 2 has a plate-like belt receiving plate provided on the inner peripheral side of the conveyor belt in the spreader according to claim 1, and the belt receiving plate includes the downstream roller. There is provided a scraper that is a plate-like member that is continuously provided from one end to the other end of the belt receiving plate so as to be convex toward the inner peripheral surface of the return side surface of the conveyor belt. .

  According to the spreader according to the second aspect, in addition to acting similarly to the spreader according to the first aspect, the belt receiving plate provided on the inner peripheral side of the conveyor belt is directed toward the downstream roller on the lower surface. A belt-like member continuously provided from one end to the other end of the belt receiving plate so as to be convex, and has a scraper that slides on the inner peripheral surface of the return side surface of the conveyor belt. Particles spilled or scattered from the belt and entered the conveyor belt, and accumulated on the inner peripheral surface of the return side surface of the conveyor belt, are moved from the downstream roller on the inner peripheral surface of the return side surface of the conveyor belt. When it is transported toward the upstream roller, it is gathered to both edges of the conveyor belt by a scraper.

  A spreader according to claim 3 is the spreader according to claim 1 or 2, comprising a hydraulic pump and a hydraulic motor connected to the hydraulic pump, and the hydraulic motor is directly connected to the downstream roller. .

  According to the spreader according to the third aspect, in addition to acting in the same manner as the spreader according to the first or second aspect, the hydraulic motor is rotationally driven by the pressure oil sent from the hydraulic pump, and the downstream is driven by the hydraulic motor. The conveyor belt is driven by rotating the side rollers.

  In order to convey the particles on the conveying surface, the particles on the conveying surface are applied rather than the force in the direction of pushing the conveyor belt against the particles on the conveying surface applied to the conveyor belt from the upstream side in the conveying direction. In the spreader according to claim 3, since the direction of pulling the conveyor belt with respect to the body can convey the conveyor belt stably by applying the force to the conveyor belt from the downstream side in the conveying direction. A hydraulic motor is directly connected to the downstream roller.

  The spreader according to claim 4 is the spreader according to any one of claims 1 to 3, wherein the carriage has a first notch for receiving a tip portion of a shaft of the upstream roller, and a shaft of the downstream roller. A second notch for receiving the tip of the first roller, and the first notch connected so that the tip of the shaft of the upstream roller is movable, and the tip of the shaft of the downstream roller is movable. The third notch has a size that allows the upstream roller and the downstream roller to pass through each other.

  According to the spreader according to the fourth aspect, in addition to the same action as the spreader according to any one of the first to third aspects, when the upstream roller is pulled out from the conveyor belt, the shaft of the upstream roller The leading end is moved from the first cutout to the third cutout, and the upstream roller is pulled out through the third cutout. When the downstream roller is pulled out of the conveyor belt, the tip of the shaft of the downstream roller is moved from the second cutout to the third cutout, and the downstream roller is pulled out through the third cutout.

  According to the spreader of the first aspect, since the protrusion is provided along the edge of the inner peripheral surface of the conveyor belt so as to be engageable with the end surface of the upstream roller and the end surface of the downstream roller. The protrusion of the conveyor belt is locked to the end face of the upstream roller and the end face of the downstream roller, and the conveyor belt is prevented from shifting in a direction substantially perpendicular to the conveying direction of the conveyor belt. Therefore, it is no longer necessary to provide the grooves formed on the rollers and the belt receiving plate in order to prevent the deviation of the conveyor belt, so the inconvenience that the particles are accumulated in the grooves formed on the rollers and the belt receiving plate is eliminated. There is an effect of doing. Moreover, since it is not necessary to form a groove in the roller or the belt receiving plate, the cost can be reduced.

  According to the spreader of the second aspect, in addition to the effect produced by the spreader of the first aspect, the belt receiver is arranged so that the scraper protrudes toward the downstream roller on the lower surface side of the belt receiving plate. Since the scraper slides on the inner peripheral surface of the return side of the conveyor belt, the particles that have entered the inner peripheral surface of the conveyor belt are surely attached to both edges. There is an effect that the particles can be gathered together and the accumulation of particles on the inner peripheral surface of the conveyor belt can be prevented. Granules gathered together on both edges of the conveyor belt can be easily discharged, for example, by blowing air.

  According to the spreader according to the third aspect, in addition to the effect produced by the spreader according to the first or second aspect, the hydraulic motor is directly connected to the downstream roller and the conveyor belt is driven. There is no need to provide a gear, a power transmission chain, and a cover for protecting the chain, and the downstream roller can be easily taken out and the conveyor belt can be easily attached and detached.

  Conventionally, gears, chains, sprockets, and the like for speed reduction have been provided between an electric motor or a hydraulic motor and a downstream roller that is rotationally driven by the electric motor or the hydraulic motor.

  Therefore, when attaching / detaching the conveyor belt, the gear, the chain connected to the gear and the sprocket had to be removed from the downstream roller, and the cover for protecting the chain had to be removed. .

  According to the spreader of Claim 4, in addition to the effect which the spreader in any one of Claim 1 to 3 shows, when extracting an upstream roller from a conveyor belt, the front-end | tip part of the axis | shaft of an upstream roller Can be moved from the first cutout to the third cutout, and the upstream roller can be pulled out through the third cutout. And when pulling out a downstream roller from a conveyor belt, the front-end | tip part of the axis | shaft of a downstream roller can be moved from a 2nd notch to a 3rd notch, and a downstream roller can be pulled out through a 3rd notch. Therefore, the other roller can be removed while supporting one roller, and even if there is only one worker, the roller can be pulled out from the conveyor belt, so that the conveyor belt can be easily attached and detached.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of a spreader (mesh sand spreader) 1 according to an embodiment of the present invention.

  The spreader 1 puts particles such as sand into a hopper 3 installed on a carriage 2, and uses particles such as sand and fertilizer supplied from the hopper 3 while running on the carriage 2, for example, a lawn of a golf course. It is a device to spread on.

  The carriage 2 has a front wheel 4, a driving rear wheel 5, which is a pair of tires provided behind the carriage 2, and a traveling pedal 6. When the traveling pedal 6 is depressed, the driving rear wheel 5 is driven to travel. Further, the cart 2 is provided with an operation switch 7 for starting the spraying of the particles and an adjustment handle 8a for adjusting the supply amount of the particles from the hopper 3.

  FIG. 2 is a side view of the spreader 1 with a part cut away.

  As shown in FIG. 2, an upstream roller 9 and a downstream roller 10 that are horizontally mounted on the carriage 2 and are rotatable around the shaft center, and the upstream roller 9 and the downstream roller 10 are below the hopper 3. A conveyor belt 11 wound around is provided.

  A brush 12 is provided on the downstream side in the conveying direction of the conveyor belt 11 so as to be rotatable around an axis.

  The lower side of the hopper 3 is open, and the opening side is in contact with the transport surface 11 a of the conveyor belt 11. A lower outlet 8 that is opened and closed by a shutter 8b is provided between the hopper 3 and the conveying surface 11a, and particles supplied from the hopper 3 are conveyed by the conveyor belt 11 through the lower outlet 8. The

  Between the upstream roller 9 and the downstream roller 10, a belt receiving plate 13 is provided in parallel with the upstream roller 9 and the downstream roller 10. The belt support surface 13a which is the upper surface of the belt receiving plate 13 is provided on the inner peripheral side of the conveyor belt 11 and supports the transport surface 11a from the back surface side.

  When the worker turns on the work switch 7 (see FIG. 1) at the spraying point, the downstream roller 10 and the brush 12 rotate. The conveyance surface 11 a of the conveyor belt 11 travels from the upstream roller 9 toward the downstream roller 10 by the rotation of the downstream roller 10.

  The shutter 8b provided at the lower outlet 8 of the hopper 3 is connected to an adjustment handle 8a (see FIG. 1). When the operator operates the handle 8a, the shutter 8b is activated, and the handle 8a The lower outlet 8 is opened by an amount corresponding to the operation amount.

  Accordingly, the amount of particles in the hopper 3 is adjusted by the amount of operation of the handle 8a, supplied to the conveyor belt 11, conveyed by the conveyor belt 11, and the brush 12 provided downstream in the conveying direction of the conveyor belt 11. Scattered and sprinkled by rotation.

  FIG. 3 shows a conveyor belt 11 provided in the spreader 1 of the present embodiment, a belt receiving plate 13 provided inside the conveyor belt 11, an upstream roller 9 and a downstream roller 10, and the belt receiving plate 13. It is a figure which shows the support member 15 which supports the upstream roller 9 and the downstream roller 10, Comprising: (a) is a figure which shows the state which removed the conveyor belt 11 from the support member 15, (b) is support. It is a figure which shows the state in which the conveyor belt 11 was attached to the member 15. FIG.

  FIG. 3A shows the conveyor belt 11 with a part cut away. Moreover, although the support member 15 is provided in a pair on both side surfaces of the carriage 2 so as to sandwich the conveyor belt 11, only one support member 15 is shown in FIG.

  As shown in FIG. 3A, synthetic resin protrusions 11 b are continuously provided on the inner peripheral surface of the conveyor belt 11 along both edges of the conveyor belt 11.

  Here, the protrusion 11b is demonstrated with reference to FIG. FIG. 4 is an enlarged view of the ridge 11b of the conveyor belt 11, wherein (a) is a view seen from the end surface 10a side of the downstream roller 10, and (b) is IVb-IVb of (a). It is sectional drawing in a line.

  As shown in FIG. 4A, the protrusion 11b is provided with a recessed portion 11d at every predetermined distance, and therefore tends to be arcuate along the upstream roller 9 and the downstream roller 10.

  4B, the conveyor belt 11 has an end face 10a of the downstream roller 10 by protrusions 11b provided along both edges of the inner peripheral surface of the conveyor belt 11. As shown in FIG. It is configured to be able to be locked.

  Therefore, when the conveyor belt 11 tries to shift in a direction substantially perpendicular to the conveying direction of the conveyor belt 11 (the axial direction of the downstream roller 10), the protrusion 11b locks the end surface 10a of the downstream roller 10. The conveyor belt 11 is restricted from moving in a direction substantially perpendicular to the conveying direction of the conveyor belt 11, and the deviation of the conveyor belt 11 is suppressed.

  Although not shown, the conveyor belt 11 is configured to be able to be locked to the end surface 9a of the upstream roller 9 by the protrusion 11b, and the conveyor belt 11 is substantially perpendicular to the conveying direction of the conveyor belt 11. If it tries to deviate in a certain direction, this protrusion 11b will latch the end surface 9a of the upstream roller 9, and the shift | offset | difference of the conveyor belt 11 is suppressed.

  Here, the term “locking” means that the protrusion 11 b engages with at least one of the end surface 9 a of the upstream roller 9 and the end surface 10 a of the downstream roller 10, and the conveyor belt 11 moves in the conveying direction of the conveyor belt 11. This means that movement in a substantially vertical direction (axial direction of the upstream roller 9 and the downstream roller 10) is suppressed.

  Returning to FIG. 3A, the belt receiving plate 13 will be described. The belt receiving plate 13 is provided with a plate-like scraper 14 that is continuous from one end to the other end in the width direction of the carriage 2 (the axial direction of the upstream roller 9 and the downstream roller 10) on the lower surface side thereof. The scraper 14 is disposed so as to have a substantially V-shape convex toward the downstream roller 10.

  Therefore, while the return surface 11 c of the conveyor belt 11 travels from the downstream roller 10 toward the upstream roller 9, the particles that have entered the inner peripheral surface of the conveyor belt 11 are both scraped by the scraper 14. Collected at the edge. The collected particles can be easily discharged to the outside by blowing air.

  The support member 15 is a member that supports the upstream roller 9, the downstream roller 10, the belt receiving plate 13, and the brush 12. The support member 15 is fixed to both side surfaces of the carriage 2, and the upstream roller 9 and the downstream roller 10. The first notch 16 and the second notch 17 for positioning each of the first notch 16 and the third notch 18 connected to the first notch 16 and the second notch 17.

  The upstream roller 9 is attached to the support member 15 by receiving the tip 9b of the shaft of the upstream roller 9 in the first notch 16 of the support member 15 and being supported by the bearing 16a.

  Further, the downstream roller 10 is attached to the support member 15 by the shaft tip portion 10b of the downstream roller 10 being received by the second notch 17 of the support member 15 and supported by the bearing 17a.

  A third notch 18 connected to the first notch 16 and the second notch 17 is formed between the first notch 16 and the second notch 17, and five bolts are provided around the third notch 18. 20 is provided.

  The locking member 19 has five through holes 21, and the bolt 20 of the support member 15 passes through the through hole 21 and is fastened with a nut (not shown), whereby the locking member 19 is supported by the support member 15. Removably fixed to.

  Between the upstream roller 9 and the downstream roller 10, the belt receiving plate 13 provided in parallel with the upstream roller 9 and the downstream roller 10 has mounting portions 13 b provided at both ends of the belt receiving plate 13. The fixing member 19 is attached to the support member 15 by being screwed to the locking member 19 through a third notch 18 formed between the first notch 16 and the second notch 17.

  Here, the third notch 18 is connected to the first notch 16 so that the tip 9b of the shaft of the upstream roller 9 can move, and the third notch 18 so that the tip 10b of the shaft of the downstream roller 10 can move. Connected with 2 notches 17.

  Specifically, the connecting portion that connects the first cutout 16 and the third cutout 18 is made larger than the diameter of the tip 9b of the shaft of the upstream roller 9, and the second cutout 17 and the third cutout 18 are connected to each other. The connecting portion to be connected is made larger than the diameter of the tip portion 10 b of the shaft of the downstream roller 10.

  When exchanging the conveyor belt 11, the locking member 19 is removed from the support member 15 and the attachment portion 13 b of the belt receiving plate 13, and the belt receiving plate 13 is pulled out through the third notch 18.

  Subsequently, the bearing 16a is removed and the shaft tip 9b of the upstream roller 9 is moved from the first notch 16 to the third notch 18, the upstream roller 9 is pulled out through the third notch 18, and the bearing 17a is removed downstream. The tip 10 b of the shaft of the side roller 10 is moved from the second notch 17 to the third notch 18, and the downstream roller 10 is pulled out through the third notch 18.

  When the upstream roller 9, the downstream roller 10, and the belt receiving plate 13 are pulled out from the inner peripheral side of the conveyor belt 11, there is no need to install the conveyor belt 11 on the carriage 2. It falls on the frame (not shown) of the carriage 2 provided below the carriage 2 and can be freely detached from the carriage 2. Therefore, for example, the hopper 3 (see FIG. 2) can be removed, and the conveyor belt 11 can be taken out from the upper side of the carriage 2 (see FIG. 2).

  When the upstream roller 9 and the downstream roller 10 are pulled out from the conveyor belt 11 in this way, one roller can be pulled out while supporting the other roller with the support member 15, so that one worker is In addition, since the upstream roller 9 and the downstream roller 10 can be pulled out, the conveyor belt 11 can be easily attached and detached.

  Here, the conveyor belt 11, the brush 12, and the pair of support members 15 that support them on the carriage 2 are provided between the driving rear wheels 5 (see FIG. 1) that are a pair of tires, and the hopper 3 is the conveyor belt. 11 is installed on the top.

  Therefore, compared with the case where these conveyor belts 11 etc. are provided on the driving rear wheel 5, the height position of the conveyor belt 11 from the ground can be lowered and installed above the conveyor belt 11. The height position of the hopper 3 from the ground can be lowered (see FIG. 1).

  Therefore, the center of gravity of the spreader 1 is lowered, the running is stabilized, and the operator can easily put particles in the hopper 3.

  In addition, as the distance from the brush 12 to the ground increases, the amount of particles scattered in the air before reaching the ground increases, and the number of particles dispersed at the target position decreases. Since the height position from the ground of the brush 12 can be made low by comprising like the spreader 1 of a present Example, a granule can be spread | dispersed efficiently.

  In the conventional spreader, the width direction of the carriage is set as the axial direction, and two rollers divided at the center are provided at the lower part of the rear of the carriage to support the rear of the carriage. The vibration of the spreader during running was large because the vibration was not absorbed. Further, since the length of the roller in the axial center direction is long, it is difficult to make a small turn of the spreader, and damage to the lawn from the roller during turning is great.

  According to the spreader of the present embodiment, since the rear of the carriage 2 is supported by the drive rear wheel 5 that is a pair of tires, the vibration of the spreader 1 can be reduced and the small turn can be improved.

  The belt receiving plate 13 will be described in detail with reference to FIG. 5A and 5B are views showing the belt receiving plate 13, wherein FIG. 5A is a view of the belt receiving plate 13 viewed from the lower surface side, and FIG. 5B is a view of the belt receiving plate 13 on the downstream roller 10 side (FIG. 5). It is the figure seen from the upper side of (a), (c) is the figure which looked at the belt receiving plate 13 from the left side surface (left side of Fig.5 (a)) of the trolley | bogie 2. FIG. In addition, in order to show the relationship between the belt receiving plate 13 and the conveyor belt 11, only the upstream roller 9, the downstream roller 10, and the conveyor belt 11 are indicated by a two-dot chain line in FIG.

  As shown in FIG. 5A, an upstream side corner pipe 25, a downstream side corner pipe 26, a left side corner pipe 27, and a right side corner pipe 28 are provided on the lower surface side of the belt receiving plate 13 for reinforcement. .

  Further, on the lower surface side of the belt receiving plate 13, a scraper support plate 22 disposed so as to protrude toward the downstream side corner pipe 26 and angles 23 and 24 for reinforcing the scraper support plate 22 are welded. It is provided integrally.

  The scraper 14 is a plate member made of synthetic resin that continues from one end to the other end in the width direction of the belt receiving plate 13 (the left-right direction in FIG. 5A). The scraper 14 is attached to the scraper support plate 22 and is configured to have a convex V shape toward the downstream roller 10 side.

  The scraper 14 slides on the inner peripheral surface of the return side surface 11 c of the conveyor belt 11, thereby collecting the particles that have entered the inner peripheral side of the conveyor belt 11 to both edges of the conveyor belt 11.

  FIG. 6 is a block diagram showing a hydraulic circuit provided in the spreader 1. The output of the engine 29 is input to the drive unit 30 and the working unit 31.

  The drive unit 30 includes a variable pump 32 that is a variable displacement hydraulic pump and a pair of wheel motors 33a and 33b that are hydraulic motors. The pair of wheel motors 33a and 33b are respectively driven rear wheels 5 (see FIG. 1). ) Is connected.

  The variable pump 32 sends pressure oil to the wheel motors 33a and 33b using the engine 29 as a drive source.

  The traveling pedal 6 (see FIG. 1) is connected to the variable pump 32. By operating the traveling pedal 6, the capacity of the variable pump 32 is changed to change the output torque and the output rotation speed of the wheel motors 33a and 33b. Let

  In addition, when the pressure oil is discharged from the oil passage P1, the spreader 1 moves forward, and when the pressure oil is discharged from the oil passage P2, the wheel motors 33a and 33b are rotated in the direction opposite to that during forward movement. The spreader 1 moves backward.

  The working unit 31 includes a gear pump 34 that is a hydraulic pump, a solenoid valve 35, a roller drive motor 36 that is a hydraulic motor, and a brush drive motor 37 that is a hydraulic motor.

  The gear pump 34 sends pressure oil to the solenoid valve 35 using the engine 29 as a drive source. The solenoid valve 35 adjusts the flow rate of the pressure oil sent from the gear pump 34 and sends it to the roller drive motor 36 and the brush drive motor 37.

  The roller drive motor 36 is received by the second notch 17 of the support member 15 and is connected to the tip 10b of the shaft of the downstream roller 10 supported by the bearing 17a, and rotationally drives the downstream roller 10 about the axis.

  The brush drive motor 37 is connected to the tip of the shaft of the brush 12 (see FIG. 2), and rotationally drives the brush 12 around the axis.

  When the work switch 7 (see FIG. 1) is turned on, the solenoid valve 35 is switched, pressure oil is supplied to the roller drive motor 36 and the brush drive motor 37, and is connected to the roller drive motor 36 and the brush drive motor 37. When the downstream roller 10 and the brush 12 are rotationally driven around the axis, the conveyor belt 11 travels, and the brush 12 provided downstream in the conveying direction of the conveyor belt 11 rotates, so that it is loaded on the hopper 3. The particles are conveyed by the conveyor belt 11 and scattered by the brush 12.

  According to the spreader 1 of the present invention, the ridges 11b are formed along both edges of the inner peripheral surface of the conveyor belt 11 so as to be locked to the end surface 9a of the upstream roller 9 and the end surface 10a of the downstream roller 10. Since the protrusion is provided, while the conveyor belt 11 is driven, the protrusion 11b of the conveyor belt 11 is locked to the end surface 9a of the upstream roller 9 and the end surface 10a of the downstream roller 10, and the conveyor belt 11 Since it can be prevented from shifting in a direction substantially perpendicular to the conveying direction of the conveyor belt 11 (the axial direction of the upstream roller 9 and the downstream roller 10), the upstream roller is conventionally used to prevent the conveyor belt 11 from shifting. 9. It is not necessary to provide the grooves provided in the downstream roller 10 and the belt receiving plate 13, and the particles do not accumulate in the grooves.

  The present invention has been described above based on the embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications and changes can be easily made without departing from the spirit of the present invention. Can be inferred.

  For example, in this embodiment, the conveyor belt 11 travels while the protrusions 11b provided along both edges of the conveyor belt 11 are engaged with the end surface 9a of the upstream roller 9 and the end surface 10a of the downstream roller 10. Although the case has been described, the protrusion 11b may be configured to be able to be locked to the end surface 9a of the upstream roller 9 and the end surface 10a of the downstream roller 10. For example, a play may be provided between the ridge 11b, the end surface 9a of the upstream roller 9, and the downstream roller 10a, and a slight shift in the width direction of the conveyor belt 11 may be allowed.

  In this embodiment, the upstream roller 9 and the downstream roller 10 are sequentially taken out from the third cutout 18. However, when the third cutout 18 is formed to be large, the belt receiving plate 13 is taken out and then the third cutout 18 is removed. The upstream roller 9 and the downstream roller 10 may be moved to the notch 18, and the upstream roller 9 and the downstream roller 10 may be taken out at a time.

  In this embodiment, the scraper 14 is composed of a single member, but may be composed of a plurality of members.

It is an appearance perspective view of a spreader in one example of the present invention. It is a side view of a spreader, and is a figure cut away and shown. It is a figure which shows the conveyor belt and support member which were provided in the spreader, Comprising: (a) is a figure which shows the state by which the conveyor belt was removed from the support member, (b) has attached the conveyor belt to the support member It is a figure which shows the state made. It is a figure which expands and shows the protrusion of a conveyor belt, Comprising: (a) is the figure seen from the end surface side of a downstream roller, (b) is sectional drawing of the conveyor belt in the IVb-IVb line | wire of (a). It is. It is a figure which shows a belt receiving plate, (a) is the figure which looked at the belt receiving plate from the lower surface side, (b) is the figure which looked at the belt receiving plate from the back side of a trolley | bogie, (c) It is the figure seen from the side of a belt receiving plate. It is a block diagram which shows the hydraulic circuit provided in a spreader. It is a perspective view of the conveyor belt provided in the conventional spreader, and is the figure which notched a part. It is sectional drawing of the conveyor belt in the VIII-VIII line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Spreader 2 Carriage 3 Hopper 8 Lower exit 9 Upstream roller 9a End face 9b of upstream roller End 10 of the upstream roller shaft Downstream roller 10a End face 10b of the downstream roller End 11 of the shaft of the downstream roller Conveyor Belt 11b Projection 11c Return side surface 12 Brush 13 Belt receiving plate 16 First notch 17 Second notch 18 Third notch 34 Gear pump (hydraulic pump)
36 Roller drive motor (hydraulic motor)

Claims (4)

A dolly that can travel, a hopper that is provided on the dolly and that accommodates particles, a lower outlet that is provided below the hopper, and an annular that conveys particles supplied from the hopper through the lower outlet A conveyor belt, an upstream roller that is rotatable about an axis supporting an upstream end of the conveyor belt in the conveying direction on the inner circumferential side of the conveyor belt, and an conveyor roller on the inner circumferential side of the conveyor belt. A downstream roller that can rotate about an axis that supports a downstream end in the conveying direction, and a grain that is provided on the downstream side in the conveying direction of the conveyor belt and that is conveyed by the conveyor belt by rotating around the axis. In a spreader having a brush for spreading the body,
The conveyor belt has a ridge projecting along an edge of an inner peripheral surface of the conveyor belt so as to be able to be locked to an end surface of the upstream roller and an end surface of the downstream roller. .   It has a plate-like belt receiving plate provided on the inner peripheral side of the conveyor belt, and the belt receiving plate is continuous from one end of the belt receiving plate to the other end so as to protrude toward the downstream roller. The spreader according to claim 1, further comprising a scraper that slides on an inner peripheral surface of a return side surface of the conveyor belt.   The spreader according to claim 1, further comprising a hydraulic pump and a hydraulic motor connected to the hydraulic pump, wherein the hydraulic motor is directly connected to the downstream roller.   The carriage has a first notch that receives the tip of the shaft of the upstream roller, a second notch that receives the tip of the shaft of the downstream roller, and a tip of the shaft of the upstream roller so that the carriage can move. A third notch that is connected to the first notch and is connected to the second notch so that the tip of the shaft of the downstream roller is movable, the third notch comprising the upstream roller and the third notch The spreader according to any one of claims 1 to 3, wherein each of the downstream rollers is of a size that can pass therethrough.

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